diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 314ef2f..34b4c72 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -24,10 +24,10 @@ jobs:
         run: nimble install --depsOnly -y
 
       - name: Run tests
-        run: nim c -d:ssl --path:src -r tests/test_all.nim
+        run: nim c -d:ssl --threads:on --path:src -r tests/test_all.nim
 
       - name: Compile benchmarks
-        run: nim c -d:release benchmarks/bench_all.nim
+        run: nim c -d:release --threads:on benchmarks/bench_all.nim
 
       - name: Compile stress test
         run: nim c -d:ssl --threads:on --path:src tests/stress_test.nim
@@ -37,7 +37,7 @@ jobs:
 
       - name: Check for unused declarations and imports
         run: |
-          nim c -d:ssl --path:src tests/test_all.nim 2>&1 | tee build.log || true
+          nim c -d:ssl --threads:on --path:src tests/test_all.nim 2>&1 | tee build.log || true
           echo "--- Checking for XDeclaredButNotUsed hints ---"
           grep -E "XDeclaredButNotUsed|UnusedImport" build.log | while read -r line; do
             echo "::warning::$line"
diff --git a/.github/workflows/clients-ci.yml b/.github/workflows/clients-ci.yml
index c30dc41..171b7d1 100644
--- a/.github/workflows/clients-ci.yml
+++ b/.github/workflows/clients-ci.yml
@@ -35,8 +35,8 @@ jobs:
 
       - name: Build binaries
         run: |
-          nim c -d:release --opt:speed -d:ssl -o:build/baradadb src/baradadb.nim
-          nim c -d:release -o:build/backup src/barabadb/core/backup.nim
+          nim c -d:release --opt:speed -d:ssl --threads:on -o:build/baradadb src/baradadb.nim
+          nim c -d:release --threads:on -o:build/backup src/barabadb/core/backup.nim
 
       - name: Build Docker image
         run: docker build -t baradb:latest .
@@ -160,15 +160,15 @@ jobs:
 
       - name: Run Nim unit tests
         working-directory: clients/nim
-        run: nim c --path:src -r tests/test_client.nim
+        run: nim c --threads:on --path:src -r tests/test_client.nim
 
       - name: Run Nim integration tests
         working-directory: clients/nim
-        run: nim c --path:src -r tests/test_integration.nim
+        run: nim c --threads:on --path:src -r tests/test_integration.nim
 
       - name: Run Nim example
         working-directory: clients/nim
-        run: nim c --path:src -r examples/basic.nim || true
+        run: nim c --threads:on --path:src -r examples/basic.nim || true
 
   test-rust:
     needs: build-server
diff --git a/baradadb.nimble b/baradadb.nimble
index 69c90a3..9c53dce 100644
--- a/baradadb.nimble
+++ b/baradadb.nimble
@@ -15,13 +15,13 @@ requires "checksums >= 0.2.0"
 
 # Tasks
 task build_debug, "Build debug version":
-  exec "nim c -d:ssl --debugger:native --linedir:on -o:build/baradadb src/baradadb.nim"
+  exec "nim c -d:ssl --threads:on --debugger:native --linedir:on -o:build/baradadb src/baradadb.nim"
 
 task build_release, "Build release version":
-  exec "nim c -d:ssl -d:release --opt:speed -o:build/baradadb src/baradadb.nim"
+  exec "nim c -d:ssl --threads:on -d:release --opt:speed -o:build/baradadb src/baradadb.nim"
 
 task test, "Run all tests":
-  exec "nim c --path:src -d:ssl -r tests/test_all.nim"
+  exec "nim c --path:src -d:ssl --threads:on -r tests/test_all.nim"
 
 task bench, "Run benchmarks":
-  exec "nim c --path:src -d:ssl -d:release -r benchmarks/bench_all.nim"
+  exec "nim c --path:src -d:ssl --threads:on -d:release -r benchmarks/bench_all.nim"